17 - 2 Flashcards by Courtney casella | Brainscape

Q

Enthalpy & rxn tendency produce…

A

Low energy, stable products

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Q

What are most reactions in nature?

A

Exothermic

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Q

Enthalpy & rxn tendency proceed…

A

Spontaneously

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Q

Describe entropy & rxn tendency

A

A measure of the disorder or randomness of particles in a system

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Q

Symbol for entropy and rxn tendency

A

TRIANGLE S

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Q

Equation for entropy & rxn tendency

A

TRIANGLE S= S products -S reactants

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Q

What are entropy and rxn tendacys order?

A

Kj/mol•K

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Q

List order of Entropy

A

S solid< S liquid < S gas

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Q

What has the most disorder & highest S?

A

Gas

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Q

What has the least disorder and and lowest S?

A

Solids

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Q

In entropy rxns are…

A

Favored to occur if S increases

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Q

What does nature tend toward?

A

High disorder

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Q

What does nature favor?

A

Rxns that result in low enthalpy & high entropy

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Q

Describe Gibbs free nrg

A

A value used to predict whether

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Q

What is symbol for Gibbs free nrg?

A

TRIANGLE G

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Q

What are units for Gibbs free nrg?

A

KJ/mol

Q

What’s formula for Gibbs free nrg?

A

TRIANGLE G= TRAINGLE H - T;TRIANGLE S

Q

What does

A

Measures the combined effects of H & S at a specific T

Q

What happens if

A

Rxn is spontaneous described as “exergonic”

Q

What happens if

A

Rxn is no spontaneous described as “endergonic”

Q

What if

A

It has reached equilibrium